| /* |
| * Copyright (C) 2013 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.android.server.display; |
| |
| import android.content.Context; |
| import android.hardware.display.DisplayManager; |
| import android.os.Handler; |
| import android.os.IBinder; |
| import android.os.IBinder.DeathRecipient; |
| import android.os.RemoteException; |
| import android.util.ArrayMap; |
| import android.util.Slog; |
| import android.view.Display; |
| import android.view.Surface; |
| import android.view.SurfaceControl; |
| |
| /** |
| * A display adapter that provides virtual displays on behalf of applications. |
| * <p> |
| * Display adapters are guarded by the {@link DisplayManagerService.SyncRoot} lock. |
| * </p> |
| */ |
| final class VirtualDisplayAdapter extends DisplayAdapter { |
| static final String TAG = "VirtualDisplayAdapter"; |
| static final boolean DEBUG = false; |
| |
| private final ArrayMap<IBinder, VirtualDisplayDevice> mVirtualDisplayDevices = |
| new ArrayMap<IBinder, VirtualDisplayDevice>(); |
| |
| // Called with SyncRoot lock held. |
| public VirtualDisplayAdapter(DisplayManagerService.SyncRoot syncRoot, |
| Context context, Handler handler, Listener listener) { |
| super(syncRoot, context, handler, listener, TAG); |
| } |
| |
| public DisplayDevice createVirtualDisplayLocked(IBinder appToken, |
| int ownerUid, String ownerPackageName, |
| String name, int width, int height, int densityDpi, Surface surface, int flags) { |
| boolean secure = (flags & DisplayManager.VIRTUAL_DISPLAY_FLAG_SECURE) != 0; |
| IBinder displayToken = SurfaceControl.createDisplay(name, secure); |
| VirtualDisplayDevice device = new VirtualDisplayDevice(displayToken, appToken, |
| ownerUid, ownerPackageName, name, width, height, densityDpi, surface, flags); |
| |
| try { |
| appToken.linkToDeath(device, 0); |
| } catch (RemoteException ex) { |
| device.destroyLocked(); |
| return null; |
| } |
| |
| mVirtualDisplayDevices.put(appToken, device); |
| |
| // Return the display device without actually sending the event indicating |
| // that it was added. The caller will handle it. |
| return device; |
| } |
| |
| public DisplayDevice releaseVirtualDisplayLocked(IBinder appToken) { |
| VirtualDisplayDevice device = mVirtualDisplayDevices.remove(appToken); |
| if (device != null) { |
| device.destroyLocked(); |
| appToken.unlinkToDeath(device, 0); |
| } |
| |
| // Return the display device that was removed without actually sending the |
| // event indicating that it was removed. The caller will handle it. |
| return device; |
| } |
| |
| private void handleBinderDiedLocked(IBinder appToken) { |
| VirtualDisplayDevice device = mVirtualDisplayDevices.remove(appToken); |
| if (device != null) { |
| Slog.i(TAG, "Virtual display device released because application token died: " |
| + device.mOwnerPackageName); |
| device.destroyLocked(); |
| sendDisplayDeviceEventLocked(device, DISPLAY_DEVICE_EVENT_REMOVED); |
| } |
| } |
| |
| private final class VirtualDisplayDevice extends DisplayDevice |
| implements DeathRecipient { |
| private final IBinder mAppToken; |
| private final int mOwnerUid; |
| final String mOwnerPackageName; |
| private final String mName; |
| private final int mWidth; |
| private final int mHeight; |
| private final int mDensityDpi; |
| private final int mFlags; |
| |
| private Surface mSurface; |
| private DisplayDeviceInfo mInfo; |
| |
| public VirtualDisplayDevice(IBinder displayToken, |
| IBinder appToken, int ownerUid, String ownerPackageName, |
| String name, int width, int height, int densityDpi, Surface surface, int flags) { |
| super(VirtualDisplayAdapter.this, displayToken); |
| mAppToken = appToken; |
| mOwnerUid = ownerUid; |
| mOwnerPackageName = ownerPackageName; |
| mName = name; |
| mWidth = width; |
| mHeight = height; |
| mDensityDpi = densityDpi; |
| mSurface = surface; |
| mFlags = flags; |
| } |
| |
| @Override |
| public void binderDied() { |
| synchronized (getSyncRoot()) { |
| if (mSurface != null) { |
| handleBinderDiedLocked(mAppToken); |
| } |
| } |
| } |
| |
| public void destroyLocked() { |
| if (mSurface != null) { |
| mSurface.release(); |
| mSurface = null; |
| } |
| SurfaceControl.destroyDisplay(getDisplayTokenLocked()); |
| } |
| |
| @Override |
| public void performTraversalInTransactionLocked() { |
| if (mSurface != null) { |
| setSurfaceInTransactionLocked(mSurface); |
| } |
| } |
| |
| @Override |
| public DisplayDeviceInfo getDisplayDeviceInfoLocked() { |
| if (mInfo == null) { |
| mInfo = new DisplayDeviceInfo(); |
| mInfo.name = mName; |
| mInfo.width = mWidth; |
| mInfo.height = mHeight; |
| mInfo.refreshRate = 60; |
| mInfo.densityDpi = mDensityDpi; |
| mInfo.xDpi = mDensityDpi; |
| mInfo.yDpi = mDensityDpi; |
| mInfo.flags = 0; |
| if ((mFlags & DisplayManager.VIRTUAL_DISPLAY_FLAG_PUBLIC) == 0) { |
| mInfo.flags |= DisplayDeviceInfo.FLAG_PRIVATE | |
| DisplayDeviceInfo.FLAG_NEVER_BLANK; |
| } |
| if ((mFlags & DisplayManager.VIRTUAL_DISPLAY_FLAG_SECURE) != 0) { |
| mInfo.flags |= DisplayDeviceInfo.FLAG_SECURE; |
| } |
| if ((mFlags & DisplayManager.VIRTUAL_DISPLAY_FLAG_PRESENTATION) != 0) { |
| mInfo.flags |= DisplayDeviceInfo.FLAG_PRESENTATION; |
| } |
| mInfo.type = Display.TYPE_VIRTUAL; |
| mInfo.touch = DisplayDeviceInfo.TOUCH_NONE; |
| mInfo.ownerUid = mOwnerUid; |
| mInfo.ownerPackageName = mOwnerPackageName; |
| } |
| return mInfo; |
| } |
| } |
| } |